<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>vue</title>
</head>
<body>
<div id="app">
    <span v-text="msg"></span>
</div>
<script src="vue.js"></script>
<script>
    var vm = new Vue({
        el:'#app',
        data:{
            msg:'<strong>hello</strong>'
        }
    })
</script>
</body>
</html>